Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Galacturonosyltransferase 4 silencing alters pectin composition and carbon partitioning in tomato

de Godoy, F., Bermudez, L., Lira, B. S., de Souza, A. P., Elbl, P., Demarco, D., et al. (2013). Galacturonosyltransferase 4 silencing alters pectin composition and carbon partitioning in tomato. Journal of Experimental Botany, 64(8), 2449-2466. doi:10.1093/jxb/ert106.

Item is

Dateien

einblenden: Dateien
ausblenden: Dateien
:
de Godoy-2013-Galacturonosyltransf.pdf (beliebiger Volltext), 2MB
Name:
de Godoy-2013-Galacturonosyltransf.pdf
Beschreibung:
-
OA-Status:
Sichtbarkeit:
Öffentlich
MIME-Typ / Prüfsumme:
application/pdf / [MD5]
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
Lizenz:
-

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
de Godoy, F.1, Autor
Bermudez, L.1, Autor
Lira, B. S.1, Autor
de Souza, A. P.1, Autor
Elbl, P.1, Autor
Demarco, D.1, Autor
Alseekh, S.2, Autor           
Insani, M.1, Autor
Buckeridge, M.1, Autor
Almeida, J.1, Autor
Grigioni, G.1, Autor
Fernie, A. R.2, Autor           
Carrari, F.1, Autor           
Rossi, M.1, Autor
Affiliations:
1External Organizations, ou_persistent22              
2Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753339              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: Pectin is a main component of the plant cell wall and is the most complex family of polysaccharides in nature. Its composition is essential for the normal growth and morphology pattern, as demonstrated by pectin-defective mutant phenotypes. Besides this basic role in plant physiology, in tomato, pectin structure contributes to very important quality traits such as fruit firmness. Sixty-seven different enzymatic activities have been suggested to be required for pectin biosynthesis, but only a few genes have been identified and studied so far. This study characterized the tomato galacturonosyltransferase (GAUT) family and performed a detailed functional study of the GAUT4 gene. The tomato genome harbours all genes orthologous to those described previously in Arabidopsis thaliana, and a transcriptional profile revealed that the GAUT4 gene was expressed at higher levels in developing organs. GAUT4-silenced tomato plants exhibited an increment in vegetative biomass associated with palisade parenchyma enlargement. Silenced fruits showed an altered pectin composition and accumulated less starch along with a reduced amount of pectin, which coincided with an increase in firmness. Moreover, the harvest index was dramatically reduced as a consequence of the reduction in the fruit weight and number. Altogether, these results suggest that, beyond its role in pectin biosynthesis, GAUT4 interferes with carbon metabolism, partitioning, and allocation. Hence, this cell-wall-related gene seems to be key in determining plant growth and fruit production in tomato.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2013-04-202013
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: Anderer: 23599271
DOI: 10.1093/jxb/ert106
ISSN: 1460-2431 (Electronic)0022-0957 (Linking)
URI: http://www.ncbi.nlm.nih.gov/pubmed/23599271http://jxb.oxfordjournals.org/content/early/2013/04/19/jxb.ert106.full.pdf
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Journal of Experimental Botany
  Andere : J. Exp. Bot
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Oxford : Oxford University Press [etc.]
Seiten: - Band / Heft: 64 (8) Artikelnummer: - Start- / Endseite: 2449 - 2466 Identifikator: ISSN: 0022-0957
CoNE: https://pure.mpg.de/cone/journals/resource/954925413883